Explosive-engine.



J'. W. SMITH. EXPLOSIVE ENGINE.

APPLICATION FILED JAN. 6, 1908. 920,405. Patented May 4, 1909 2 SEEETS-SEIBT 1.

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-J. W. SMITH.

EXPLOSIVE ENGINE. APPLIUATIQN FILED JAN, s, 1908-.`

Patented May 4, 1909.

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JOHN WILLIAM SMITH, OF AURORA, IOWA.

EIPLSIIE -ENGINE No. eeoioa,

Specification oi Letters Patent.

Patented May 4:, 1909.

.application filed. January 6, 1908.l Serial No. 409,568.

To all wlw/iii it may concern:

Be it known that I, donn IWILLIAM Sinin, a citizen ol the United States, residing at Aurora, in the county oi Buchanan and State ol Iowa, have invented a new and useful Explosive-Engine, of which the following is a speciiication.

'llie present invention relates niore particularly to inea-ns for controlling the supply of charges to the cylinder of an explosive engine and the principal object is to provide a novel, an exceedingly simple, and thoroughly practicable apparatus, which can be readily applied to practically any type of explosive engine, by means oil which the charges delivered to the engine will be autoinatically varied according to the speed oi such engine,

The pre irrod cnibiiuliineiit of the invention is illustrated in the acciunpanying d rawings, wlierein- VFigure il is a side elevation ci an engine, showing the improvements applied thereto. Fig. 2 is a horizontal sectional view therethrough. Fig. 3 is a side elevation on an enlarged scale of the controlling nioans. Fig. d is a vertical longitudinal sectional view therethrough. llig. 5 is a longitudinal sectional view through the casing. Fig. 6 is an end elevation oi said casing. Fig. 7 is aside elevation ol the abutment washer.

Similar reference numerals designate corresponding parts in all thc iigures of the drawings.

The enginel which. may bc olf any suitable type, in the present embodiment, comprises a cylinder i3 in which operates a reciproca tory piston Q, said piston being connected by a pitnian l() to the cranlr 1l of the engine shaft l2. I his sha'lit is geared as shown at 13 to a stub shaft lll, on which is inounted a cani 15 for operating the exhaust valve I6. The said exhaust valve is provided with a stein 17 having a roller bearing 18 against the earn. @n the engine shaft l2 is also mounted pulley 19 by ineans oi which the charge supply governing ineohanisin is op erated, as hereinafter described.

Located at the rear end, portion ot the cylinder ineinber and at one side is a boss 20, into which is threaded the inner end of a valve casing 2l, said valve casing being tubular in torni and having an air supply passageway 29 extending longitudinally therethrough. This passageway has an outer open end, and its inner end is surrounded by a valve seat 28. An inwardly opening valve 2d cooperates with the valve seat 23, and has a valve stein that entends longitudinally through the air passageway 22 and projects troni the outer end thereof. rllhe said stein has a slidable bearing in a guide sleeve 26 located centrally in the air passageway, and held in position by spider arms 27, rie spring 28 bearing against the spider arins and against a collar 29 'lined to the stern, normally maintains the alve 24 in closed condition.

The outer end portieri of the valve casing 2l is circular in cross section and constitutes bearing or support Jfor a rotatable driving gear rneinber, in the 'forni oi a pulley 30 counccted to the pulley '1.9 of the engine shalt by a belt Si.. This pulley also constitutes a support 'lor a ceui'wrilfugal governor, the gov ernor comprising bell cranks 32 pivotally connected as shown at to ears 3a, projecting from the outer side oi said pulley. The outstanding arms 35 et the bell cranks have weights 36, and the inwirdly extending an gularly disposed arins 37 are located on opposite sides oi the stein 25. A coiled spring 3S bears at its outer end against an adjusting nut 39 threaded upon the outer end oi the valve stein 25, and its inner end bears against the flange l0 ol" a sleeve Lli slidably mounted on the valve stein. This sleeve in turn is engaged. with an abutment washer l2 having a transverse groove i3 in its inner side, .said groove receiving the inner ends or" the arin 37 IvIydrocarbon or other inotivo lluid, derived iroin any suitable source oi supply, as iior instance, a reservoir ed mounted on the engine or cylinder and having a pipe l5 that is connected to the to p of the casing 2l, coininunicates with a supply channel lo that opens through the valve seat 223. The valve 2d consequently controls not only the air passageway 22 but the channel 46. The sup ply oi motive Ylluid is controlled by a suitable needle valve l? that closes the outer end of the channel i6 and is threaded into a suitable casing portion 48.

The operation oi the structure, it thought will be readily understood by those skilled in the art. Upon the intake stroke of the piston, the valve 2li will be opened, due to the greater pressure of the air on the outer side oi the saine. Upon the opening rnoveinent of the valve7 hydrocarbon or other suitable motive lluid will be drawn in through the channel 46, and mixing with the inrushing air that passes the bore 2"? ot the casing will be vaporized, as it is carried into the engine cylinder. During the explosion or working stroke and the exhaust, the valve 24 .vill remain closed. fis the engine sha'lit l2 rotates, the pulley P() will be rotated, because of the belt connection with the pulley 19, and as the speed oi the engine increases, the arms 35 under the action ol the centrifugal weights 36 will swing outwardly. The result is that the abutment disk #l2 will be moved outwardly toward the nut 39, thus compressing the spring 3S and producing greater resistance to the opening movement el' the valve.

T he peculiar' advantage resulting 'from the use of the two springs, 28, 38, is that the spring 38 is normally not under tension, while the spring 28 is under tension at all times. Thus the spring 28 acts as the usual valve spring and operates under normal conditions or when the engine is starting, while the spring 3S is brought into action only after the speed ot the engine has reached such a point that the governor is actuated. The governor then puts the spring 3S under tension by compressing it between the disk 4t2 and the nut 89. The tension ol this spring 38 thereiore acts to additionallyT hold the valve to its seat against the opening nieve ment and to limit to this extent the opening movement ol the valve, thus decreasing the amount et the charge which will enter the cylinder'.

vllrom the foregoing, it is thought that the construction, operation and many advantages et the herein described invention will be apparent to those skilled in the art, without further description, and it will be understood that various changes in the size, shape, proportion and minor details ot construction, may be resorted to without departing from the spirit or sacrificing any ol: the advantages of the invention.

Having thus fully described. my invention, what l claim as new, and desire to secure by Letters latent, is

l. ln governing mechanism for explosive engines, the combination with a casing, of a controlling valve in the casing, a valve stem projecting out et the casing, a rotatable element concentric to the stem but independent thereof, a spring surrounding the stein and holding the valve closed, a disk sliding on the stem and bearing against the spring, and bell crank levers pivoted to the rotatable member, one arm oi each bell crank extending inward against the disk, the other arm ot' the bell crank being provided with a weight.

2. ln governing mechanism for explosive engines, the combination with a casing, of a controlling valve in the casing having a stem extending through and projecting from the casing, a spring contained within the casing coiled about the stem, a spring exterior to the casing and coiled about the stem, both springs havingfbearings at their outer ends against the stem, an adjustable bearing for the inner end of one of the springs, and a centrifugal governor for adjusting said bearing.

3. ln governing mechanism lor explosive, engines, the combination with a casing, of a valve operating therein and liaving a stem projecting out therefrom, a spring contained. within the casing and acting against the valve to hold it closed, a spring surroiniding that portion ol the stein which is exterior to the casing and acting against the valve, a rotatable element mounted upon the casing, a dish surrounding t ie valve stem and bearing against the inner end of said last-named spring, and a series of bell cranks mounted upon the rotatable element having inwardly projecting arms engaging with the dish, and arms projecting parallel with the stem having governor' balls thereon.

e. A governing mechanism for explosive engines, the combination with a casing, el a valve operating therein and having a stem, a spring coiled about the stem and having a bearing against the same, a sleeve slidably mounted on the stem and interposed between the same and the spring, said sleeve having an outstanding flange, a dish rotatably and slidably mounted upon the stem and bearing against the flange, said disk having a groove, and a centrifugal governor rotatably mounted on the casing and including weighted arms that engage in the groove.

5. in governing mechanism for explosive engines, the combination with a casing having an air passageway therethrough provided with an outer open inlet end, of an inwardly opening valve controlling the passageway and having a stem projecting from the outer inlet end and of less cross sectional area than the same, and a centrifugal O*overnor rotatably mounted on the casing and rotatable about the stem as an axis, said governor cooperating with the stem for controlling the movement of the valve.

6. ln governing mechanism lor explosive engines, the combination with a tubular valve casing having an air passageway therethrough, of a valve seat located at the inner end of the passageway, said passageway opening through the outer end or the casing, an inwardly opening valve cooperating with the valve seat and having a stem extending longitudinally through the passageway and projecting beyond and of less cross sectional area than the outer end of the casing, a driving gear member rotatably mounted on the tubular casing, centrifugal arms pivoted on the member, and connections between the arms and the stem.

7. ln a governing mechanism for explosive anonce engines, the combination with a valve casing having a passageway therethrough, of an inwardly-opening valve controlling said passageway and having a stein projecting ifroin the casing, a spring surrounding the stem and located in the interior of the casing for holding the valve closed, a spring surrounding that portion oi the stein which projects from the casing, an abutment mounted upon the end olI the stern which said last named spring bears, a disl; surrounding the stein and bearing against the other end ol the spring, a pulley journaled on the casing and having ears, and a series of bell cranls mounted in the ears having inwardiy-projecting arins engaging with the disk, and arms projecting parallel to the stein having governor ballsn 8. ln governing mechanism for eX losive engines, the combination with a tubu ar casing having a valve seat at its inner end and open at its outer end, of an inwardly opening valve cooperating with the seat and having a stem extending through and projecting beyond the casing, said stein being of less dialneter than the opening in the outer end of the casing, an adjustable bearing mounted on the stein, a spring engaged with the bearing and. surrounding the stein, an abutment member' slidably mounted on the stein and bearing against the spring, a pulley journaled on the casing, and crank arms pivoted between their ends on the pulley, said arms having their outer ends weighted and their inner ends bearing against the abutment.

9. ln governing mechanism ior explosive engines the combination with a valve casing, of a charge supply valve in the casing, a spring acting against the opening oiI the valve and normally under tension, a spring normally not under tension but which when under tension additionally acts against the opening oll the valve, and a centrifugal governor operating to place the second-named spring under tension upon an increase of speed in the engine.

ln testimony, that l claim the foregoing as my own, l have hereto aiiixed my signature in the presence of two witnesses.

JOHN WlLLIAM Sidi'llzlf. lliitnesses:

Gno. lionfinns,

ll.. D. Jnnivnv, 

